Variability of Extragalactic Objects in Relation to Redshift, Color, Radio Spectral Index and Absorption Lines

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2

Scientific paper

Optical variability of extragalactic objects, viz., QSOs, BL Lacs and Seyfert galaxies has been monitored systematically over an appreciable period of time and a large amount of data have accumulated. The present work reports results of investigations involving statistical analysis of updated data on relationships between variability and various observed properties of the objects, viz., redshift, color indices, radio spectral index and absorption lines. It is found that at high frequencies (rest frame) radio spectral index does not change significantly with the degree of variability. However, the degree of variability depends on redshifts. On the other hand, presence or absence of absorption lines is significantly associated with variability for QSOs with larger redshifts (z > 1.0), while no such relationship exists for QSOs at smaller redshifts (z < 1.0) or other objects. Correlation between color indices and redshifts depends on the degree of variability and the sample chosen for the color index.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Variability of Extragalactic Objects in Relation to Redshift, Color, Radio Spectral Index and Absorption Lines does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Variability of Extragalactic Objects in Relation to Redshift, Color, Radio Spectral Index and Absorption Lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variability of Extragalactic Objects in Relation to Redshift, Color, Radio Spectral Index and Absorption Lines will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1104218

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.